. >>> mourning and celebrating nelson mandela. world leaders travel to south africa for an unprecedented gathering. >>> and the pittsburgh steelers play hot potato in a frantic final play agasthe dolphins. captioning funded by cbs news" for monday, december 9th, 2013. good morning. >>> this is the "cbs morning news" for monday, december 9th, 2013. good morning. good to be with you. i'm anne-marie green. well, this morning's commute for folks from pennsylvania to new england is going to be a mess. a powerful and deadly storm that started in texas moved east, dropping a mixture of snow, ice, and freezing rain that caused traffic headaches and flight delays, and this morning winter weather advisories and warnings are posted from missouri to maine. marlie hall is here in new york and she is definitely dressed for the challenge this morning. marlie. >> reporter: good morning, anne-marie. this surprisingly strong storm swept across the country, smacking the mid-atlantic region with snow and dangerous deadly ice. the storm slowed traffic